GLENBROOK LIFE & ANNUITY CO SEPARATE ACCOUNT A
485APOS, 2000-03-03
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     As filed with the Securities and Exchange Commission on March 3, 2000.

- -------------------------------------------------------------------------------

                                                             File Nos. 333-50879
                                                                       811-07351

                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                    FORM N-4

           REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 /X/

                         POST-EFFECTIVE AMENDMENT NO. 3

                                     AND/OR

       REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 /X/

                                AMENDMENT NO. 11

                  GLENBROOK LIFE AND ANNUITY COMPANY SEPARATE ACCOUNT A
                           (Exact Name of Registrant)

                        GLENBROOK LIFE AND ANNUITY COMPANY
                               (Name of Depositor)

                               MICHAEL J. VELOTTA
                  VICE PRESIDENT, SECRETARY AND GENERAL COUNSEL
                        GLENBROOK LIFE AND ANNUITY COMPANY
                                3100 SANDERS ROAD
                           NORTHBROOK, ILLINOIS 60062
                                  847/402-2400
                (Name and Complete Address of Agent for Service)

                                   COPIES TO:

ANTHONY POOLE, ESQUIRE                   TERRY R. YOUNG, ESQUIRE
ALLSTATE LIFE INSURANCE COMPANY          ALLSTATE LIFE FINANCIAL SERVICES, INC.
3100 SANDERS ROAD, SUITE J5B             3100 SANDERS ROAD, SUITEJ5B
NORTHBROOK, ILLINOIS 60062               NORTHBROOK, ILLINOIS 60062


            APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING: CONTINUOUS
IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)

     __ immediately  upon filing pursuant to paragraph (b) of Rule 485
     __ on (date)  pursuant to  paragraph  (b) of Rule 485
      X 60 days after  filing  pursuant  to  paragraph  (a)(1) of Rule 485
     __ on (date) pursuant to paragraph (a)(1) of Rule 485

IF APPROPRIATE, CHECK THE FOLLOWING BOX:

__  This  post-effective  amendment  designates  a  new  effective  date  for  a
previously filed post-effective amendment.

TITLE OF SECURITIES  BEING  REGISTERED:  Units of Interest in the Glenbrook Life
and  Annuity  Company  Separate  Account  A  under  Deferred   Variable  Annuity
Contracts.


<PAGE>


                                Explanatory Note

Registrant is filing this  post-effective  amendment  ("Amendment") for the sole
purpose of amending the  registration  statement to reflect (a) the substitution
of a new  income  benefit  option and (b) the  substitution  of a new income and
death benefit option,  both of which Registrant proposes to make available on or
about May 1, 2000 under the contracts  described in the registration  statement.
The  Amendment is not  intended to amend or delete any part of the  registration
statement, except as specifically noted herein. Prior to May 1, 2000, Registrant
intends  to  file  a  subsequent  post-effective  amendment,  including  revised
prospectuses  and a statement of additional  information,  that will incorporate
the changes set out in this Amendment.

<PAGE>
PART A
- ------
Each prospectus contained in the registration statement is amended as follows:


1.   In the section entitled "The Contract at a Glance," the language  contained
     in the first bullet under the heading "Expenses" shall be replaced with the
     following:


     o    Total Variable Account annual fees equal to 1.10% of average daily net
          assets (1.30% if you select the Enhanced  Death Benefit  Option or the
          Performance  Death  Benefit  Rider if you select  the  Income  Benefit
          Combination  Option,  and 1.60% if you select the  Enhanced  Death and
          Income and Death Benefit Combination Option)


2.   The  information  contained  under the  heading  "Variable  Account  Annual
     Expenses"  in the Expense Table shall be replaced with the following:


                  Mortality and Expense Risk Charge               1.00%*
                  -------------------------------------------------------
                  Administrative Expense Charge                   0.10%
                  -------------------------------------------------------
                  Total Variable Account Annual Expenses          1.10%
                  -------------------------------------------------------


               * If you select the Enhanced Death Benefit Option,  the mortality
               and  expense  risk  charge is 1.30%.  If you select the  Enhanced
               Death and Income  Benefit  Combination  Rider,  the mortality and
               expense  risk  charge is 1.60%.


3.   The examples following the Expense Table shall include the following charts
     (to be completed by amendment):


     (With Optional Income Benefit Combination Provision )

      Name of Sub-Account           1 Year  3 Years  5 Years  10 Years
      -------------------           ------  -------  -------  --------

     (With Optional Income and Death Benefit Combination Provision )

      Name of Sub-Account           1 Year  3 Years  5 Years  10 Years
      -------------------           ------  -------  -------  --------



     The language following Example 2 shall be replaced with the following:

               Please  remember  that  you are  looking  at  examples  and not a
               representation  of past or future earnings.  Your actual expenses
               may be lower or greater than those shown above.  Similarly,  your
               rate of  return  may be lower or  greater  than 5%,  which is not
               guaranteed.  The  above  examples  assume  the  election  of  the
               Enhanced  Death  and  Income  Benefit  Combination  Rider  with a
               mortality  and expense  risk charge of 1.60%.  If that Rider were
               not elected,  the expense  figures  shown above would be slightly
               lower.  To  reflect  the  contract   maintenance  charge  in  the
               examples,  we estimated an equivalent percentage charge, based on
               the current average Contract size of $47,490.


4.   The section entitled  "Mortality and Expense Risk Charge" shall be replaced
     with the following:

MORTALITY AND EXPENSE RISK CHARGE

We deduct a mortality  and expense  risk charge daily at an annual rate of 1.00%
of the daily net assets you have invested in the Variable Sub-Accounts (1.20% if
you  select  the  Enhanced  Death  Benefit  Rider,  and 1.60% if you  select the
Enhanced Death and Income Benefit  Combination Rider). The mortality and expense
risk  charge is for all the  insurance  benefits  available  with your  Contract
(including our guarantee of annuity rates and the death  benefits),  for certain
expenses of the  Contract,  and for  assuming the risk  (expense  risk) that the
current  charges  will  be  sufficient  in the  future  to  cover  the  cost  of
administering  the  Contract.   If  the  charges  under  the  Contract  are  not
sufficient,  then we will bear the loss. We charge an additional  amount for the
Enhanced  Death  Benefit  Rider  and  the  Enhanced  Death  and  Income  Benefit
Combination  Rider to  compensate us for the  additional  risk that we accept by
providing these options.

We guarantee that we will not raise the mortality and expense charge.  We assess
the mortality and expense risk charge during both the Accumulation Phase and the
Payout Phase.


5.   The section  entitled  "Enhanced Death Benefit" shall be replaced with
     the following:

Enhanced Death Benefit

Enhanced Death Benefit Rider

If the Contract owner is a living individual, the enhanced death benefit applies
only for the death of the Contract  owner. If the Contract owner is not a living
individual,  the  enhanced  death  benefit  applies  only  for the  death of the
Annuitant.  For  Contracts  with the Enhanced  Death  Benefit  Rider,  the death
benefit will be the greatest of (1) through (4) above, or (5) the enhanced death
benefit.  The  enhanced  death  benefit is equal to the greater of the  Enhanced
Death Benefit A or Enhanced Death Benefit B. Enhanced Death Benefit B may not be
available in all states.

That enhanced death benefit will never be greater than the maximum death benefit
allowed by any nonforfeiture laws that govern the Contract.

Enhanced  Death  Benefit A. At issue,  Enhanced  Death Benefit A is equal to the
initial purchase payment.  After issue, Enhanced Death Benefit A is the greatest
of the  Anniversary  Values as of the date we determine the death  benefit.  The
"Anniversary  Value" is equal to the Contract  Value on a Contract  Anniversary,
increased by purchase  payments  made since that  Anniversary  and reduced by an
adjustment for any partial withdrawals since that Anniversary. The adjustment is
equal to (a) divided by (b), and the result multiplied by (c) where:

          (a)  is the withdrawal amount,
          (b)  is the Contract Value immediately prior to the withdrawal, and
          (c)  is the Contract  Value on that Contract  Anniversary  adjusted by
               any prior purchase  payments and withdrawals  since that Contract
               Anniversary.

We will calculate  Anniversary Values for each Contract Anniversary prior to the
oldest  Contract  owner's or the  Annuitant's,  if the  Contract  owner is not a
natural person, 80th birthday.

Enhanced  Death  Benefit  B.  The  Enhanced  Death  Benefit  B is equal to total
purchase  payments made reduced by a withdrawal  adjustment,  as defined  below.
Each purchase payment and each withdrawal  adjustment will accumulate daily at a
rate equivalent to 5% per year until the earlier of:

     o    the date we determine the death benefit, or
     o    the first day of the month following the oldest  Contract  owner's or,
          if the Contract owner is not a natural person,  the Annuitant's,  85th
          birthday.

          The  adjustment  is  equal  to (a)  divided  by (b),  and  the  result
          multiplied by (c) where:

          (a)  the withdrawal amount,
          (b)  is the Contract Value immediately prior to the withdrawal, and
          (c)  is the most recently calculated enhanced death benefit.

The  Enhanced  Death  Benefit B will never be  greater  than the  maximum  death
benefit allowed by any non-forfeiture laws which govern the Contract.

6.   The section entitled "Enhanced Death and Income Benefit  Combination Rider"
     shall be replaced with the following:

Enhanced Death and Income Benefit Combination Rider


You may elect not to choose the  Enhanced  Death  Benefit  Rider and may instead
choose the Enhanced Death and Income Benefit Combination Rider.

The enhanced  death  benefit  portion of the Enhanced  Death and Income  Benefit
Combination  Rider is as described  above under  "Enhanced  Death  Benefit Rider
Enhanced Death Benefit B."

The  enhanced  income  benefit  defines a minimum  amount  applied to the Payout
Phase.  This  minimum  amount is equal to the value the enhanced  death  benefit
would be on the Payout Start Date.


     To exercise your enhanced  income  benefit,  you must apply it to an Income
     Plan.  The Payout  Start  Date you select  must begin on or after the tenth
     anniversary  of the  Rider  Date,  and  within  30 days  after  a  Contract
     Anniversary.  No Market  Value  Adjustment  will be applied to the enhanced
     incomed  benefit amount.  In addition,  you must apply your enhanced income
     benefit to an Income Plan that  provides  guaranteed  payments for either a
     single or joint life for at least:

     1.   10 years,  if the youngest  Annuitant's  age is 90 or less on the date
          you apply the Benefit, or

     2.   5 years,  if the  youngest  Annuitant's  age is greater than 90 on the
          date you apply the Benefit.

               If your  current  Contract  Value is higher than the  Performance
               Income  Benefit,  you can apply the Contract  Value to any Income
               Plan. The Income Benefit  Combination Option may not be available
               in all states.

               Income Base

     The Income Base is the greater of Income Base A or Income Base B.

               Income  Base is used solely for the  purpose of  calculating  the
               Guaranteed  Income  Benefit and does not provide a Contract Value
               or guarantee performance of any investment option.



<PAGE>



     Income Base A

o    On the Rider Date, Income Base A is equal to the Contract Value

o    After the Rider  Date,  Income  Base A is  recalculated  as  follows on the
     Contract Anniversary and when a purchase payment or withdrawal is made

o    For  purchase  payments,  Income  Base  A is  equal  to the  most  recently
     calculated Income Base A plus the purchase payment

o    For  withdrawals,  Income Base A is equal to the most  recently  calculated
     Income Base A reduced by a withdrawal adjustment (described below)

o    On each Contract Anniversary,  Income Base A is equal to the greater of the
     Contract Value or the most recently calculated Income Base A.

     In the absence of any withdrawals or purchase payments,  Income Base A will
     be the  greatest of the  Contract  Value on the Rider Date and all Contract
     Anniversary  Contract  Values  between the Rider Date and the Payout  Start
     Date.

     We will  recalculate  Income  Base A as  described  above  until  the first
     Contract  Anniversary  after the 85th birthday of the oldest Contract owner
     or Annuitant (if the Contract owner is not a natural person). After age 85,
     we  will  only  recalculate  the  Performance  Income  Benefit  to  reflect
     additional purchase payments and withdrawals.

     Income Base B

     On the Rider Date, Income Base B is equal to the Contract Value.  After the
     Rider Date, Income Base B plus any subsequent  purchase payments and less a
     withdrawal adjustment (described below) for any subsequent withdrawals will
     accumulate  daily at a rate  equivalent  to 5% per  year  until  the  first
     Contract  Anniversary  after  the  85th  birthday  of the  oldest  owner or
     Annuitant (if the Contract owner is not a natural person).

     Withdrawal Adjustment

     The  adjustment is equal to (1) divided by (2), with the result  multiplied
     by (3) where:

          (1)  = the withdrawal amount

          (2)  = the Contract Value

          (3)  = the most recently calculated Income Base

     Guaranteed Income Benefit

     The  guaranteed  income benefit amount is determined by applying the Income
     Base less any applicable  taxes to the guaranteed rates for the Income Plan
     you elect. The Income Plan you elect must satisfy the conditions  described
     above.

A claim for a distribution on death must include "Due Proof of Death."  We will
accept the following documentation as Due Proof of Death:

     o    a certified copy of a death certificate; or

     o    a certified copy of a decree of a court of competent  jurisdiction  as
          to a finding of death; or

     o    any other proof acceptable to us.


PART B
- -------

The statement of additional  information contained in the registration statement
is amended as follows:


1.   The  tables in the  sections  entitled  "Standardized  Total  Returns"  and
     "Non-Standardized  Total  Returns"  shall be deleted and replaced  with the
     following tables(to be completed by amendment):



(WITHOUT  THE ENHANCED  DEATH  BENEFIT  OPTION OR THE ENHANCED  DEATH AND INCOME
BENEFIT COMBINATION OPTION)

                                                                 10 Years or
Variable Sub-Account       One Year         Five Years        Since Inception
                           --------------------------------------------------



(WITH THE ENHANCED DEATH BENEFIT OPTION)*

                                                                10 Years or
Variable Sub-Account       One Year         Five Years        Since Inception
                           --------------------------------------------------



(WITH THE ENHANCED DEATH AND INCOME BENEFIT COMBINATION OPTION)*

                                                                10 Years or
Variable Sub-Account       One Year         Five Years        Since Inception
                           --------------------------------------------------


2.   The tables in the section  entitled  "Adjusted  Historical  Total  Returns"
     shall be deleted and replaced with the following  tables(to be completed by
     amendment):



(WITHOUT THE ENHANCED DEATH BENEFIT OPTION OR THE ENHANCED DEATH AND INCOME
BENEFIT COMBINATION OPTION)

                                                                10 Years or
Variable Sub-Account       One Year         Five Years        Since Inception
                           --------------------------------------------------



(WITH THE ENHANCED DEATH BENEFIT OPTION)*

                                                                 10 Years or
Variable Sub-Account       One Year         Five Years        Since Inception
                           --------------------------------------------------



(WITH THE ENHANCED DEATH AND INCOME BENEFIT OPTION)*

                                                                10 Years or
Variable Sub-Account       One Year         Five Years        Since Inception
                           --------------------------------------------------





<PAGE>

PART C

Part C is hereby amended to include the following exhibits:


Item 24(b). EXHIBITS

(4)      Form of Contract Riders
         Form of Contract Amendment


<PAGE>



                                   SIGNATURES

As  required by the  Securities  Act of 1933 and the  Investment  Company Act of
1940, the Registrant has caused this Registration  Statement,  as amended, to be
signed on its behalf by the undersigned, thereunto duly authorized, and its seal
to be hereunto affixed and attested, all in the Township of Northfield, State of
Illinois, on the 2nd day of March, 2000.

              GLENBROOK LIFE AND ANNUITY COMPANY SEPARATE ACCOUNT A
                                  (REGISTRANT)

                      BY: GLENBROOK LIFE AND ANNUITY COMPANY
                                   (DEPOSITOR)

(SEAL)

                                    By: /s/MICHAEL J. VELOTTA
                                    --------------------------
                                    Michael J. Velotta
                                    Vice President, Secretary and
                                        General Counsel

As required by the  Securities  Act of 1933,  this  Registration  Statement,  as
amended,  has been duly signed below by the following  Directors and Officers of
Glenbrook Life and Annuity Company on the 2nd day of March, 2000.



*/THOMAS J. WILSON, II              President and Chief Operating Officer
- ----------------------
Thomas J. Wilson, II

/s/MICHAEL J. VELOTTA               Vice President, Secretary, General Counsel
- ----------------------                and Director
Michael J. Velotta


*/JOHN R. HUNTER                    Vice President and Director
- ----------------
John R. Hunter


*/KEVIN R. SLAWIN                   Vice President and Director
- ------------------                   (Principal Financial Officer)
Kevin R. Slawin


*/CASEY J. SYLLA                    Chief Investment Officer and Director
- -----------------
Casey J. Sylla


*/SAMUEL H. PILCH                   Controller
- ----------------------               (Principal Accounting Officer)
Samuel H. Pilch


*/ By Michael J. Velotta, pursuant to Power of Attorney, previously filed.



<PAGE>



                                  EXHIBIT LIST

The following exhibit is filed herewith:

EXHIBIT NO.                DESCRIPTION

(4)                     Form of Contract Riders
                        Form of Contract Amendment







 GLA109                                          Page 4            (2/00)

                       GLENBROOK LIFE AND ANNUITY COMPANY
                          (herein called "we" or "us")

Amendment to Master  Policy for Enhanced  Death and Income  Benefit  Combination
Rider II


The Enhanced Death and Income Benefit  Combination  Rider, if selected,  effects
the following changes to the Owner's Contract:

As used in this rider,  "Contract"  means the Contract or  Certificate  to which
this rider is attached.

For  purposes of this benefit  "Rider  Date" is the date the Enhanced  Death and
Income Benefit Combination rider was made a part of the Owner's Contract.

The following provision is added to the Master Policy.

Enhanced Death Benefit The following is added to the Death Benefit provision.

If the Owner is a living individual,  the Enhanced Death Benefit applies only to
the death of the Owner.  If the Owner is not a living  individual,  the Enhanced
Death Benefit applies only to the death of the annuitant.

The Death Benefit will be the greater of the values  stated in the Contract,  or
the value of the Enhanced Death Benefit.

The Enhanced Death Benefit is equal to the greater of the Enhanced Death Benefit
A or Enhanced  Death  Benefit B. The  Enhanced  Death  Benefit and the  Enhanced
Income  Benefit  will  cease on the date we  determine  the  value of the  Death
Benefit.


     Enhanced Death Benefit A

     After the Rider Date,  the Enhanced Death Benefit A is equal to the initial
     purchase  payment.  After the Rider Date,  the Enhanced  Death Benefit A is
     recalculated when a purchase payment or withdrawal is made or on a Contract
     anniversary as follows:

     1.   For purchase  payments,  the Enhanced  Death Benefit A is equal to the
          most recently  calculated  Enhanced  Death Benefit A plus the purchase
          payment.

     2.   For  withdrawals,  the Enhanced  Death  Benefit A is equal to the most
          recently  calculated  Enhanced Death Benefit A reduced by a withdrawal
          adjustment defined below.

     3.   On each Contract anniversary, the Enhanced Death Benefit A is equal to
          the  greater of the  Contract  Value or the most  recently  calculated
          Enhanced Death Benefit A.

     In the absence of any withdrawals or purchase payments,  the Enhanced Death
     Benefit A will be the greatest of all Contract  anniversary Contract Values
     on or prior to the date we calculate the Death Benefit.

     The Enhanced Death Benefit A will be  recalculated  for purchase  payments,
     withdrawals  and on Contract  anniversaries  until the oldest  Owner or the
     annuitant, if the Owner is not a living individual, attains age 85.



<PAGE>



     After age 85, the Enhanced  Death Benefit A will be  recalculated  only for
purchase payments and withdrawals.

     Enhanced Death Benefit B

     The  Enhanced  Death  Benefit B is equal to total  purchase  payments  made
     reduced  by  a  withdrawal  adjustment.  Each  purchase  payment  and  each
     withdrawal  adjustment will accumulate daily at a rate equivalent to 5% per
     year until the earlier of:

     1.   the date we determine the Death Benefit, or

     2.   the first day of the month  following  the oldest  Owner's  or, if the
          Owner is not a living individual, the annuitant's 85th birthday.

     The Enhanced  Death  Benefit B will never be greater than the maximum death
     benefit allowed by any nonforfeiture laws which govern the Contract.


Withdrawal Adjustment

The  withdrawal  adjustment  is equal to (a)  divided  by (b),  with the  result
multiplied by (c), where:

         (a)  =  the withdrawal amount.
         (b)  =  the Contract Value immediately prior to the withdrawal.
         (c)  =  the most recently calculated Enhanced Death Benefit A or B,
                 as applicable.


Enhanced Income Benefit   The following is added to the Payout Phase Section.

Qualifications

On the  Payout  Start  Date,  the Owner may choose to  receive  income  payments
defined  in the  Enhanced  Income  Benefit  provision  if  all of the  following
conditions are met.

o    The  Owner  elects a  Payout  Start  Date  that is on or  after  the  tenth
     anniversary of the Rider Date;

o    The Payout Start Date occurs during the 30 day period  following a Contract
     anniversary;

o    The Income Base is applied to Fixed Amount Income Payments; and

o    The selected Income Plan provides payments  guaranteed for either single or
     joint life with a period certain of at least:

o    10 years,  if the  youngest  Annuitant's  age is 80 or less on the date the
     amount is applied, or

o    5 years, if the youngest Annuitant's age is greater than 80 on the date the
     amount is applied.

     Throughout  the PAYOUT PHASE section of your  contract,  the term "Contract
     Value' is replaced with "the greater of the Contract  Value or the Enhanced
     Income  Benefit";  however,  no Market  Adjustment  will be  applied to the
     Enhanced Income Benefit Amount.

Income Base

The Income Base is the greater of Income Base A or Income Base B.

Income Base is used solely for the purpose of calculating the Guaranteed  Income
Benefit and does not provide a Contract  Value or guarantee  performance  of any
investment option.


<PAGE>



     Income Base A


o    On the Rider Date, Income Base A is equal to the Contract Value.

o    After the Rider  Date,  Income  Base A is  recalculated  as  follows on the
     Contract anniversary and when a purchase payment or withdrawal is made.

o    For  purchase  payments,  Income  Base  A is  equal  to the  most  recently
     calculated Income Base plus the purchase payment.

o    For  withdrawals,  Income Base A is equal to the most  recently  calculated
     Income Base reduced by a withdrawal adjustment.

o    On each Contract anniversary,  Income Base A is equal to the greater of the
     Contract Value or the most recently calculated Income Base A.

     In the absence of any withdrawals or purchase payments,  Income Base A will
     be the  greatest of the  Contract  Value on the Rider Date and all Contract
     anniversary  Contract  Values  between the Rider Date and the Payout  Start
     Date.

     Income Base A will be recalculated for purchase  payments,  for withdrawals
     and on Contract  anniversaries  until the first Contract  anniversary after
     the  85th  birthday  of the  oldest  Owner  or,  if no  Owner  is a  living
     individual, the Annuitant.

     After that  date,  Income  Base A will be  recalculated  only for  purchase
payments and withdrawals.

     Income Base B

     On the Rider Date, Income Base B is equal to the Contract Value.  After the
     Rider Date, Income Base B plus any subsequent  purchase payments and less a
     withdrawal adjustment for any subsequent withdrawals, will accumulate daily
     at a rate equivalent to 5% per year. The  accumulation  will continue until
     the first Contract  anniversary after the 85th birthday of the oldest Owner
     or, if the Owner is not a living individual, the oldest Annuitant.

Withdrawal Adjustment

The  withdrawal  adjustment  is equal to (a)  divided  by (b),  with the  result
multiplied by (c), where:

         (a) = the withdrawal amount.

         (b) = the Contract Value immediately prior to the withdrawal.

         (c) = the most recently calculated Income Base.

Guaranteed Income Benefit

The  Guaranteed  Income Benefit amount is determined by applying the Income Base
less any applicable taxes to the guaranteed rates for the Income Plan elected by
the Owner.  The Income Plan  selected  must  satisfy the  conditions  defined in
Qualifications  above.  The rates are the guaranteed rates defined in the Income
Payment Tables section for either a single or joint life with a period certain.

On the  Payout  Start  Date,  the  income  payment  will be the  greater  of the
Guaranteed  Income Benefit and the income  payment  provided in the Payout Phase
section.

Mortality  and  Expense  Risk  Charge The  Mortality  and  Expense  Risk  Charge
provision is modified as follows:



<PAGE>



The annualized Mortality and Expense Risk Charge is increased by 0.50%

After the death of the Owner,  if the  surviving  spouse  elects to continue the
Contract in the Accumulation  Phase,  then the annualized  Mortality and Expense
Risk Charge will be reduced by 0.50%.  The effective date of this change will be
the date we determine the value of the Death Benefit.


         Michael J. Velotta                   Thomas J. Wilson

              Secretary                 Chairman and Chief Executive Officer


<PAGE>
                                     Page 4
 GLA110                                                           (2/00)
                       GLENBROOK LIFE AND ANNUITY COMPANY
                          (herein called "we" or "us")

             Enhanced Death and Income Benefit Combination Rider II


This rider was issued  because you selected the Enhanced  Death  Benefit and the
Enhanced Income Benefit.

As used in this rider,  "Contract"  means the Contract or  Certificate  to which
this rider is attached.

For purposes of this rider,  "Rider Date" is the date this rider was made a part
of your Contract: xx/xx/xxxx

Enhanced Death Benefit The Death Benefit  provision of your Contract is modified
by adding the following:

If the Owner is a living individual,  the Enhanced Death Benefit applies only to
the death of the Owner.  If the Owner is not a living  individual,  the Enhanced
Death Benefit applies only to the death of the annuitant.

The Death Benefit will be the greater of the values stated in your Contract,  or
the value of the Enhanced Death Benefit.

The Enhanced Death Benefit is equal to the greater of the Enhanced Death Benefit
A or Enhanced  Death  Benefit B. The  Enhanced  Death  Benefit and the  Enhanced
Income  Benefit  will  cease on the date we  determine  the  value of the  Death
Benefit.


     Enhanced Death Benefit A

     After the Rider Date,  the Enhanced Death Benefit A is equal to the initial
     purchase  payment.  After the Rider Date,  the Enhanced  Death Benefit A is
     recalculated when a purchase payment or withdrawal is made or on a Contract
     anniversary as follows:

     1.   For purchase  payments,  the Enhanced  Death Benefit A is equal to the
          most recently  calculated  Enhanced  Death Benefit A plus the purchase
          payment.

     2.   For  withdrawals,  the Enhanced  Death  Benefit A is equal to the most
          recently  calculated  Enhanced Death Benefit A reduced by a withdrawal
          adjustment defined below.

     3.   On each Contract anniversary, the Enhanced Death Benefit A is equal to
          the  greater of the  Contract  Value or the most  recently  calculated
          Enhanced Death Benefit A.

          In the absence of any withdrawals or purchase  payments,  the Enhanced
          Death  Benefit  A will be the  greatest  of all  Contract  anniversary
          Contract  Values  on or  prior  to the  date we  calculate  the  Death
          Benefit.

          The  Enhanced  Death  Benefit  A will  be  recalculated  for  purchase
          payments,  withdrawals and on Contract  Anniversaries until the oldest
          Owner or the  annuitant,  if the  Owner  is not a  living  individual,
          attains age 85.

     After age 85, the Enhanced  Death Benefit A will be  recalculated  only for
purchase payments and withdrawals.


     Enhanced Death Benefit B



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     The  Enhanced  Death  Benefit B is equal to total  purchase  payments  made
     reduced  by  a  withdrawal  adjustment.  Each  purchase  payment  and  each
     withdrawal  adjustment will accumulate daily at a rate equivalent to 5% per
     year until the earlier of:

          1.   the date we determine the Death Benefit, or

          2.   the first day of the month  following  the oldest  Owner's or, if
               the  Owner  is not a  living  individual,  the  annuitant's  85th
               birthday.

     The Enhanced  Death  Benefit B will never be greater than the maximum death
     benefit allowed by any nonforfeiture laws which govern the Contract.


Withdrawal Adjustment

The  withdrawal  adjustment  is equal to (a)  divided  by (b),  with the  result
multiplied by (c), where:

         (a)  =  the withdrawal amount.
         (b)  =  the Contract Value immediately prior to the withdrawal.
         (c)  =  the most recently calculated Enhanced Death Benefit A or B,
                 as applicable.


Enhanced Income Benefit The following is added to your Contract.

Qualifications

On the  Payout  Start  Date,  the Owner may choose to  receive  income  payments
defined  in the  Enhanced  Income  Benefit  provision  if  all of the  following
conditions are met.

o    The  Owner  elects a  Payout  Start  Date  that is on or  after  the  tenth
     anniversary of the Rider Date;

o    The Payout Start Date occurs during the 30 day period  following a Contract
     anniversary;

o    The Income Base is applied to Fixed Amount Income Payments; and

o    The selected Income Plan provides payments  guaranteed for either single or
     joint life with a period certain of at least:

o    10 years,  if the  youngest  Annuitant's  age is 80 or less on the date the
     amount is applied, or

o    5 years, if the youngest Annuitant's age is greater than 80 on the date the
     amount is applied.


     Throughout  the PAYOUT PHASE section of your  Contract,  the term "Contract
     Value" is replaced with "the greater of the Contract  Value or the Enhanced
     Income Benefit"; however, no Market Value Adjustment will be applied to the
     Enhanced Income Benefit amount.

Income Base

The Income Base is the greater of Income Base A or Income Base B.

Income Base is used solely for the purpose of calculating the Guaranteed  Income
Benefit and does not provide a Contract  Value or guarantee  performance  of any
investment option.




     Income Base A

o    On the Rider Date, Income Base A is equal to the Contract Value. o

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o    After the Rider  Date,  Income  Base A is  recalculated  as  follows on the
     Contract anniversary and when a purchase payment or withdrawal is made.

o    For  purchase  payments,  Income  Base  A is  equal  to the  most  recently
     calculated Income Base plus the purchase payment.

o    For  withdrawals,  Income Base A is equal to the most  recently  calculated
     Income Base reduced by a withdrawal adjustment.

o    On each Contract anniversary,  Income Base A is equal to the greater of the
     Contract Value or the most recently calculated Income Base A.

     In the absence of any withdrawals or purchase payments,  Income Base A will
     be the  greatest of the  Contract  Value on the Rider Date and all Contract
     anniversary  Contract  Values  between the Rider Date and the Payout  Start
     Date.

     Income Base A will be recalculated for purchase  payments,  for withdrawals
     and on Contract  anniversaries  until the first Contract  anniversary after
     the  85th  birthday  of the  oldest  Owner  or,  of no  Owner  is a  living
     individual, the Annuitant.

     After that  date,  Income  Base A will be  recalculated  only for  purchase
payments and withdrawals.

     Income Base B

     On the Rider Date, Income Base B is equal to the Contract Value.  After the
     Rider Date, Income Base B Plus any subsequent  purchase payments and less a
     withdrawal adjustment for any subsequent withdrawals, will accumulate daily
     at a rate equivalent to 5% per year. The  accumulation  will continue until
     the first Contract  anniversary after the 85th birthday of the oldest Owner
     or, if the Owner is not a living individual, the oldest Annuitant.

Withdrawal Adjustment

The  withdrawal  adjustment  is equal to (a)  divided  by (b),  with the  result
multiplied by (c), where:

         (a) = the withdrawal amount.

         (b) = the Contract Value immediately prior to the withdrawal.

         (c) = the most recently calculated Income Base.

Guaranteed Income Benefit

The  Guaranteed  Income Benefit amount is determined by applying the Income Base
less any applicable taxes to the guaranteed rates for the Income Plan elected by
the Owner.  The Income Plan  selected  must  satisfy the  conditions  defined in
Qualifications  above.  The rates are the guaranteed rates defined in the Income
Payment  Tables section of the Contract for either a single or joint life with a
period certain.

On the  Payout  Start  Date,  the  income  payment  will be the  greater  of the
Guaranteed  Income Benefit and the income  payment  provided in the Fixed Amount
Income Payments provision of the Contract.


Mortality  and  Expense  Risk  Charge The  Mortality  and  Expense  Risk  Charge
provision of your Contract is modified as follows:

The annualized Mortality and Expense Risk Charge is increased by 0.50%.



<PAGE>



After the death of the Owner,  if the  surviving  spouse  elects to continue the
Contract in the Accumulation  phase,  then the annualized  Mortality and Expense
Risk Charge will be reduced by 0.50%.  The effective date of this charge will be
the date we determine the value of the Death Benefit.


         Michael J. Velotta                  Thomas J. Wilson

               Secretary             Chairman and Chief Executive Officer




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